P1051 – Crankcase Ventilation Fault (BMW)

Description

P1051 BMW indicates a fault in the crankcase ventilation system.

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Symptoms

  • Rough idle
  • Oil consumption
  • Hesitation

Causes

  • PCV valve failure
  • Air leak
  • Hose damage

Diagnosis

  • Check PCV valve
  • Inspect hoses
  • Scan DME

Repair

  • Replace PCV valve
  • Repair hoses
  • Fix air leaks